It's the end of the line for Apple's line of servers, the Xserve. The Cupertino giant has just announced that the Xserve line (no more future models, either) will no longer be sold after January 31, 2011, and advises people interested in Mac OS X Server to buy either a Mac Mini or a Mac Pro with Snow Leopard Server installed.

I used to administer a couple of Xserves (G5 back then) with an Xserve RAID that was hosting user accounts for a university department (with matching Mac clients). A Mac Mini certainly won't replace that.